)
OIL JET / CHECK VALVE |
|
The inspection procedure for this oil jet is the same as for the conventional oil jet. |
CRANKSHAFT OIL CLEARANCE (PLASTIGAGE METHOD) |
| The crankshaft oil clearance can be measured easily by using a plastigage, as follows. |
) |
1.Remove oil and grease and any other foreign matters from crankshaft journal and bearing
inner surface. 2.Install the crankshaft. 3.Cut the plastigage to the same length as the width of bearing and place it on journal in parallel with its axis. 4.Gently place the crankshaft bearing cap over it and tighten the bolts to the specified torque. 5.Remove the bolts and gently remove the crankshaft bearing cap. |
) |
6.Measure the width of the smashed plastigage at its widest section by using a scale printed
on the plastigage bag. Standard value: 0.040 - 0.055 mm Limit: 0.1 mm |
CYLINDER BLOCK |
) |
1.Using a straightedge and thickness gauge, check the block top surface for warpage. Make
sure that the surface is free from gasket chips and other objects. Standard value: 0.05 mm Limit: 0.1 mm 2.If the distortion is excessive, replace the cylinder block. |
) |
3.Check cylinder walls for scratches and size. If defects are evident, correct (bored to
oversize) or replace. 4.Using cylinder gauge, measure the cylinder bore, and cylindricity. If worn badly, correct cylinder to an oversize and replace piston and piston rings. Measurement points are shown in illustration. Standard value:
Cylindricity 0.02 mm |
BORING CYLINDER |
1.Oversize pistons to be used should be determined on the basis of the largest bore
cylinder.
|
) |
2.Measure outside diameter of piston to be used. Measure it in thrust direction as shown. 3.Based on measured piston O.D. calculate boring finish dimension. Boring finish dimension = Piston O.D. + Clearance between piston O.D. and cylinder -0.02 mm (honing margin) 4.Bore all cylinders to calculated boring finish dimension.
6.Check clearance between piston and cylinder. Clearance between piston and cylinder:
|